A precision measuring device for lumber cutting

Abstract

The application provides a precise measuring device for wood cutting, and relates to the field of cutting equipment, which comprises a bearing assembly, a frame assembly is hingedly installed at the rear side of the bearing assembly, a cutting assembly is connected with a control assembly at the front end of the bearing assembly, the control assembly can realize synchronous angular swing of three groups of cutting assemblies, a synchronous assembly is installed at the connecting assembly, the driving mode of the synchronous assembly can control the movement of the other two groups of cutting assemblies in a step-by-step amplification mode, so that the three groups of cutting assemblies always have the same spacing, the width of only one position needs to be detected between the three groups of cutting assemblies, the spacing of multiple groups can be the same, the cutting and precise measuring effect of wood is facilitated and fast, and the problems that the existing equipment needs to cut wood block by block, cannot uniformly cut wood in advance, and the wood cutting efficiency is reduced, so that the wood cannot be cut fast to the same size are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting equipment, in particular to a precise measuring device for wood cutting. BACKGROUND

[0002] With the improvement of people's living conditions, some wooden products used in life also gradually increase, and the production materials of wood required by wooden products also increase. Wooden products have good appearance and usability, and there are many types of wooden products, such as wooden furniture, handicrafts and tools, etc. Some kitchen wooden spatulas and chopsticks belong to consumables, and the demand for use is large. The wood used is required to be high.

[0003] Generally, before the wood is made into tools, the larger wood needs to be cut. The existing equipment needs to cut the wood block by block, which is difficult to uniformly divide the wood in advance. Simply cutting the wood block by block will affect the cutting production efficiency of the wood block, causing the problem that the same size wood cannot be quickly cut. SUMMARY

[0004] Therefore, the present application provides a precise measuring device for wood cutting to solve the problem that the existing equipment needs to cut the wood block by block, cannot uniformly divide the wood in advance, reduces the wood cutting efficiency, and causes the problem that the same size wood cannot be quickly cut.

[0005] The present application provides a precise measuring device for wood cutting, which specifically comprises: a bearing assembly, a frame assembly is hingedly installed at the rear side position of the bearing assembly, a cutting assembly is slidingly installed on the frame assembly, a connecting assembly is slidingly installed at the root position of the frame assembly, the connecting assembly and the cutting assembly are connected to each other, a synchronous assembly is arranged at the top position of the connecting assembly, a control assembly is installed on the front end face of the frame assembly, the front end position of the cutting assembly is connected with the control assembly, and a pressing assembly is installed at the right bottom of the cutting assembly.

[0006] Further, the bearing plate of the bearing assembly is in a rectangular plate structure, a horizontal structure extension rod is arranged at the bottom rear end position of the bearing plate, the extension rod is arranged in a four-group structure, an installation back plate is slidingly installed on the extension rod, the installation back plate is in a long strip plate structure, and an expansion sleeve is arranged at the connection between the installation back plate and the extension rod.

[0007] Further, the mounting frame of the frame assembly is arranged to be fixed at the top position of the installation back plate, a shaft body is arranged at the upper end of the mounting frame, a bearing frame is hingedly installed on the shaft body of the mounting frame, the bearing frame is in a rectangular frame structure, a sliding groove is arranged at the front end position of the bearing frame, and a sliding rail is arranged at the position of the bearing frame close to the mounting frame.

[0008] Further, the connecting block of the connecting assembly is arranged to be mounted on the shaft body of the frame assembly, the cutting assembly is rotatably mounted at the front end position of the connecting block, the top pin block is mounted at the outer end position of the connecting block where the cutting assembly is mounted, the blocking block is arranged at the outer end of the top pin block, the spring is additionally arranged at the top pin block, and the part of the cutting assembly inside the connecting assembly is provided with the groove.

[0009] Further, the mounting plate of the synchronous assembly is arranged to be fixed at the top of each connecting assembly, the moving rod is rotatably mounted on the left mounting plate, the moving rod adopts the telescopic structure, the moving rod is screw-connected with the rod body, the end position of the moving rod is fixed on the mounting plate at the middle position, the top wheel is rotatably mounted on the mounting plate connected to the end of the moving rod, the pull belt is arranged at the position of the top wheel, the top of the pull belt is in a fixed state, the bottom of the pull belt is connected to the sliding rod, the sliding rod is slidingly mounted on the sliding rail, the end of the sliding rod is fixed with the right mounting plate, and the sliding rod and the sliding rail are additionally provided with the tension spring.

[0010] Further, the cutting device of the cutting assembly is slidingly mounted on the bearing rod, the cutting device is rotatably mounted at the front end of the frame assembly, the protruding strip is arranged on the bearing rod, the cutting device is rotatably mounted at the rear side of the connecting assembly, the outer protruding block is arranged at the front end position of the cutting device, the positioning block is mounted in the outer protruding block, and the side scale is hingedly mounted on the outer protruding block.

[0011] Further, the bottom plate of the pressing assembly is in a frame structure, the bottom plate is slidingly mounted at the bottom position of the cutting assembly, the bottom plate is provided with the roller shaft at the front and rear ends of the bottom, and the transmission belt is mounted at the position of the roller shaft of the bottom plate.

[0012] Further, the synchronous shaft of the control assembly is arranged in a long shaft structure, the synchronous shaft is rotatably mounted at the front end position of the frame assembly, the sliding block is slidingly mounted on the synchronous shaft, the sliding block is clamped at the front end position of each cutting assembly, the transmission wheel is mounted at each sliding block, the transmission wheel is slidingly mounted on the synchronous shaft along with the sliding block, the contrast plate is arranged on the frame assembly at the left position of the synchronous shaft, the control block is clamped and mounted on the transmission wheel of the frame assembly close to the contrast plate, and the position of the control block corresponding to the contrast plate is arranged in a hollow structure.

[0013] The beneficial effects are: 1, the bearing assembly rear side position is hinged to the forward extending frame assembly, the frame assembly is slidably installed with the cutting assembly and the connecting assembly, the cutting assembly can swing at the connecting assembly while sliding, the cutting assembly is connected with the control assembly at the front end position, the control assembly can realize synchronous angle swinging of three groups of cutting assemblies, the connecting assembly is provided with the synchronous assembly, the driving mode of the synchronous assembly can control the movement of the other two groups of cutting assemblies to realize the amplification movement mode, so that the three groups of cutting assemblies always have the same spacing, so that the width of only one place needs to be detected, and the same spacing of multiple groups is realized, and the cutting precision measurement effect of wood is facilitated.

[0014] 2, the top of the mounting bracket is provided with a horizontal shaft, the shaft of the mounting bracket can realize the convenient hinged installation of the bearing frame, and the shaft also has the convenient installation of the connecting assembly, the bearing frame is provided as a rectangular structure, and the front end of the bearing frame is provided with a sliding groove, so that the bearing frame is convenient for installing the cutting assembly and the control assembly.

[0015] 3, the connecting block is arranged on the shaft of the frame assembly, so that the connecting block can move in the circumferential direction and the axial direction on the shaft, so that the connecting block can better follow the movement of the frame assembly and the cutting assembly, the spring is arranged at the top pin block, so that the top pin block can stably abut against the cutting assembly, and the groove is arranged at the part of the connecting assembly where the cutting assembly is located, so that when the top pin block abuts against the cutting assembly, the rotation of the cutting assembly is limited, and the swinging angle of the cutting assembly is facilitated.

[0016] 4, the movable rod is arranged in a telescopic structure, and the telescopic part of the movable rod is arranged in a screw connection, so that the telescopic movement of the movable rod can be realized by rotating the movable rod, the movable rod is rotatably installed on the mounting plate, and the movable rod is fixed to the middle mounting plate at the end, so that the middle movable rod can be controlled when the movable rod is telescoped.

[0017] 5, when the middle mounting plate is pushed, the top wheel on the mounting plate will abut against the pull belt, the pull belt will pull the sliding rod to slide outward on the sliding rail after being abutted, and the end of the sliding rod is fixed to the right mounting plate, so that when the whole synchronous assembly moves, the movable rod can control the movement of the middle mounting plate and drive the movement of the mounting plate at the right position, and the spacing between the three mounting plates can always remain the same, so that the equidistant cutting of the cutting assembly on the wood is facilitated.

[0018] 6、The cutting device is first cut and arranged to slide on the bearing rod, and the bearing rod is provided with a protruding strip, so that the positioning block arranged in the outer protruding block can be directly abutted on the bearing rod, so that the positioning block controls the sliding position of the cutting device, and the position control of the cutting assembly is facilitated.

[0019] 7、The cutting assembly is arranged to cut wood in use, so that the bottom of the cutting assembly is directly arranged with a pressing assembly to ensure the stability of the cut wood, the bottom of the chassis plate is arranged with a transmission belt, and the pressing assembly can press the wood without affecting the movement of the cutting assembly and the pressing assembly when the cutting assembly slides forward.

[0020] 8、The sliding block is first arranged with a transmission wheel, the transmission wheel is connected with the cutting assembly, and the transmission wheels at the opposite positions are simultaneously slidably arranged on the synchronous shaft, so that one group of cutting assemblies can directly transmit power from the transmission wheel to the synchronous shaft when swinging, and the other transmission wheels on the synchronous shaft move at the same time, so that the multiple groups of cutting assemblies can realize synchronous swinging through the control assembly. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0022] The drawings described below only relate to some embodiments of the present application, and are not limited to the present application.

[0023] In the drawings:

[0024] Figure 1 is a schematic view of the overall structure of the embodiment of the present application;

[0025] Figure 2 is a schematic view of the frame assembly structure of the embodiment of the present application;

[0026] Figure 3 is a schematic view of the mounting back plate structure of the embodiment of the present application;

[0027] Figure 4 is a schematic view of the cutting assembly structure of the embodiment of the present application;

[0028] Figure 5 is a schematic view of the connection assembly structure of the embodiment of the present application;

[0029] Figure 6 is a schematic view of the pressing assembly structure of the embodiment of the present application;

[0030] Figure 7 is a schematic view of the Figure 4The local structure schematic view of the middle A is enlarged;

[0031] Figure 8 The local structure schematic view of the middle B is enlarged Figure 4 The local structure schematic view of the middle B is enlarged

[0032] Figure 9 The local structure schematic view of the middle B is enlarged Figure 5 The local structure schematic view of the middle C is enlarged.

[0033] The local structure schematic view of the middle C is enlarged.

[0034] 1, bearing assembly; 101, bearing plate; 102, mounting back plate; 103, extension rod; 2, frame assembly; 201, mounting frame; 202, bearing frame; 203, sliding rail; 3, connecting assembly; 301, connecting block; 302, blocking block; 303, top pin block; 4, synchronization assembly; 401, mounting plate; 402, moving rod; 403, sliding rod; 404, top wheel; 405, pull belt; 5, cutting assembly; 501, cutting device; 502, bearing rod; 503, outer protruding block; 504, positioning block; 505, side scale; 6, compression assembly; 601, chassis plate; 602, transmission belt; 7, control assembly; 701, synchronization shaft; 702, sliding block; 703, transmission wheel; 704, contrast plate; 705, control block. DETAILED DESCRIPTION

[0035] In order to make the purpose, scheme and advantages of the technical scheme of the present application more clear, the technical scheme of the present application will be described clearly and completely below in combination with the drawings of the specific embodiments of the present application.

[0036] Embodiment: please refer to Figures 1 to 9 as shown:

[0037] The present application provides a kind of precision measuring device for wood cutting, including bearing assembly 1, the rear side position of the bearing assembly 1 is hingedly installed with frame assembly 2, cutting assembly 5 is slidably installed on frame assembly 2, connecting assembly 3 is slidably installed at the root position of frame assembly 2, connecting assembly 3 and cutting assembly 5 are connected with each other, synchronization assembly 4 is provided at the top position of connecting assembly 3, control assembly 7 is installed at the front end surface of frame assembly 2, cutting assembly 5 is connected with control assembly 7 at the front end position, and compression assembly 6 is installed at the right side bottom of cutting assembly 5.

[0038] The bearing plate 101 of the bearing assembly 1 is in a rectangular plate structure, the bottom rear end position of the bearing plate 101 is provided with an extension rod 103 in a horizontal structure, the extension rod 103 is provided in a structure of four groups, the extension rod 103 is slidably installed with the mounting rear plate 102, the extension rod 103 is provided in a structure of four groups, so that the mounting rear plate 102 can increase the stability of the mounting rear plate 102 after being installed on the extension rod 103, the mounting rear plate 102 is in a long strip plate structure, the mounting rear plate 102 is provided with an expansion sleeve at the connection position with the extension rod 103, the expansion sleeve is additionally installed at the sliding installation position of the mounting rear plate 102 and the extension rod 103, so that the mounting rear plate 102 can be more stably installed on the extension rod 103 through the expansion sleeve, and the whole bearing assembly 1 is more stable.

[0039] The mounting bracket 201 of the frame assembly 2 is provided to be fixed at the top position of the mounting rear plate 102, the upper end of the mounting bracket 201 is provided with a shaft body, the top position of the mounting bracket 201 is provided with a horizontal shaft body, the shaft body of the mounting bracket 201 can realize the function of conveniently hingedly installing the bearing frame 202, and the shaft body also has the function of conveniently installing the connecting assembly 3, the bearing frame 202 is hingedly installed on the shaft body of the mounting bracket 201, the bearing frame 202 is in a rectangular frame structure, the front end position of the bearing frame 202 is provided with a sliding groove, the bearing frame 202 is provided in a rectangular structure, and the front end of the bearing frame 202 is provided with a sliding groove, so that the bearing frame 202 can conveniently install the cutting assembly 5, the control assembly 7 and other assemblies, the position of the bearing frame 202 close to the mounting bracket 201 is provided with a sliding rail 203, the sliding rail 203 provided on the bearing frame 202 is arranged at the rear side position of the bearing frame 202, which is helpful to conveniently slide and install part of the synchronous assembly 4, and the same is also helpful to the sliding movement of the cutting assembly 5 and the connecting assembly 3, and has the function of auxiliary guiding.

[0040] The connecting block 301 of the connecting assembly 3 is provided to be installed on the shaft body of the frame assembly 2, the cutting assembly 5 is rotatably installed at the front end position of the connecting block 301, the connecting block 301 is provided to be installed on the shaft body of the frame assembly 2, so that the connecting block 301 can move in the circumferential direction and the axial direction on the shaft body, so that the connecting block 301 can better follow the movement of the frame assembly 2 and the cutting assembly 5, the outer end position of the connecting block 301 installed with the cutting assembly 5 is installed with a top pin block 303, the outer end of the top pin block 303 is provided with a blocking block 302, the top pin block 303 is additionally provided with a spring, part of the cutting assembly 5 in the connecting assembly 3 is provided with a groove, the spring is arranged at the top pin block 303, so that the top pin block 303 can stably abut against the cutting assembly 5, and the part of the cutting assembly 5 in the connecting assembly 3 is provided with a groove, so that when the top pin block 303 abuts against the cutting assembly 5, the rotation of the cutting assembly 5 is limited to a certain extent, and the swinging angle of the cutting assembly 5 is conveniently controlled.

[0041] The installation plate 401 of the synchronous assembly 4 is arranged to be fixed on the top of each set of connecting assemblies 3, the left installation plate 401 is rotatably installed with a moving rod 402, the moving rod 402 adopts a telescopic structure, the moving rod 402 is screw-connected with the rod body in it, the moving rod 402 is arranged in a telescopic structure, and the telescopic part of the moving rod 402 is screw-connected, so that rotating the moving rod 402 can realize the telescopic movement of the moving rod 402, the end of the moving rod 402 is fixed on the installation plate 401 at the middle position, the moving rod 402 is rotatably installed on the installation plate 401, and the end of the moving rod 402 is fixed on the installation plate 401 at the middle position, at this time, when the moving rod 402 is telescoped, the middle moving rod 402 can be controlled, the installation plate 401 connected to the end of the moving rod 402 is rotatably installed with a top wheel 404, the top wheel 404 is arranged at a position, and the top wheel 404 is arranged at a position, the top of the pull belt 405 is in a fixed state, the bottom of the pull belt 405 is connected to the sliding rod 403, the sliding rod 403 is slidably installed on the sliding rail 203, and the end of the sliding rod 403 is fixed on the right installation plate 401, when the installation plate 401 at the middle position is pushed, the top wheel 404 on the installation plate 401 will be pushed on the pull belt 405, the pull belt 405 will be pulled to slide the sliding rod 403 outward on the sliding rail 203, at this time, the end of the sliding rod 403 is fixed on the right installation plate 401, so that when the whole synchronous assembly 4 moves, the moving rod 402 can control the movement of the middle installation plate 401 and drive the installation plate 401 at the right position to move, and the interval between the three sets of installation plates 401 can always keep the same interval, so as to facilitate the equidistant cutting of the wood by the subsequent cutting assembly 5, the sliding rod 403 and the sliding rail 203 are additionally provided with a tension spring, the sliding rod 403 and the sliding rail 203 are connected by a spring, so that when the sliding rod 403 is retracted, the sliding rod 403 can be quickly reset by the tension spring.

[0042] The cutting device 501 of the cutting assembly 5 is slidingly installed on the bearing rod 502, the front end of the cutting device 501 is rotatably installed on the frame assembly 2, the bearing rod 502 is provided with a protruding strip, the rear side of the cutting device 501 is rotatably installed on the connecting assembly 3, the front end position of the cutting device 501 is provided with an outer protruding block 503, the outer protruding block 503 is installed with a positioning block 504, first, the cutting device 501 is slidingly installed on the bearing rod 502, and the bearing rod 502 is provided with a protruding strip, so that the positioning block 504 installed in the outer protruding block 503 can be directly abutted on the bearing rod 502, achieving the control effect of the positioning block 504 on the sliding position of the cutting device 501, facilitating the subsequent position control of the cutting assembly 5, and the side measuring scale 505 is hingedly installed on the outer protruding block 503, the side measuring scale 505 provided at the front end position of the outer protruding block 503 has the effect of facilitating the position measurement of the adjacent cutting assembly 5 through the side measuring scale 505 after swinging, achieving the control and measurement of the cutting position.

[0043] The bottom frame plate 601 of the pressing assembly 6 is in a frame structure, the bottom frame plate 601 is slidingly installed at the bottom position of the cutting assembly 5, the bottom frame plate 601 is provided with a roller shaft at the front and rear ends of the bottom, and the roller shaft position of the bottom frame plate 601 is installed with a transmission belt 602, the cutting assembly 5 is used for cutting wood during use, so as to ensure the stability of the cut wood, the bottom of the cutting assembly 5 is directly installed with the pressing assembly 6, so that the pressing assembly 6 plays an auxiliary pressing effect on the wood, and the bottom of the bottom frame plate 601 is provided with the transmission belt 602, so that when the cutting assembly 5 slides forward, the pressing assembly 6 can press the wood through the transmission belt 602 without affecting the movement of the cutting assembly 5 and the pressing assembly 6.

[0044] The control assembly 7 is provided with a long shaft structure, and the synchronous shaft 701 is rotatably installed at the front end of the frame assembly 2. The sliding block 702 is slidably installed on the synchronous shaft 701, and the sliding block 702 is connected to the front end of each cutting assembly 5. The transmission wheel 703 is installed on each sliding block 702. The transmission wheel 703 is slidably installed on the synchronous shaft 701. The sliding block 702 is used for installing the transmission wheel 703, and the transmission wheel 703 is connected to the cutting assembly 5. The transmission wheel 703 is slidably installed on the synchronous shaft 701. When one of the cutting assemblies 5 swings, the power is transmitted from the transmission wheel 703 to the synchronous shaft 701. The other transmission wheels 703 on the synchronous shaft 701 move simultaneously. The multiple cutting assemblies 5 are synchronously swung by the control assembly 7. The frame assembly 2 is provided with a contrast plate 704 on the left side of the synchronous shaft 701. The control block 705 is connected to the transmission wheel 703 near the contrast plate 704. The position of the control block 705 corresponding to the contrast plate 704 is provided with a hollow structure. The control block 705 is connected to the transmission wheel 703. The swing of the control block 705 is controlled by the transmission wheel 703 and the cutting assembly 5. The position of the control block 705 corresponding to the contrast plate 704 is provided with a hollow structure. When the control block 705 swings, the angle of the control block 705 corresponding to the contrast plate 704 is observed through the hollow position.

[0045] The specific use and role of the embodiment are as follows: in the application, the spring is arranged at the top pin block 303, so that the top pin block 303 can stably abut against the cutting assembly 5; the part of the cutting assembly 5 arranged at the connecting assembly 3 is provided with a groove, so that the top pin block 303 can limit the rotation of the cutting assembly 5 when the top pin block 303 abuts against the cutting assembly 5, and the swing angle of the cutting assembly 5 is controlled; the moving rod 402 is arranged in a telescopic structure, and the telescopic part of the moving rod 402 is arranged in a screw connection, so that the telescopic movement of the moving rod 402 can be realized by rotating the moving rod 402; the moving rod 402 is rotatably arranged on the mounting plate 401, and the end of the moving rod 402 is fixed to the middle mounting plate 401; when the moving rod 402 is telescoped, the middle moving rod 402 can be controlled; when the mounting plate 401 in the middle position is pushed, the top wheel 404 on the mounting plate 401 can abut against the pull belt 405, the pull belt 405 is pulled after being abutted, and the sliding rod 403 is slid outward on the sliding rail 203; the end of the sliding rod 403 is fixed to the right mounting plate 401, so that when the whole synchronous assembly 4 moves, the moving rod 402 can control the movement of the middle mounting plate 401, and the right mounting plate 401 can be moved at the same time; the intervals between the three mounting plates 401 can always keep the same interval, so that the cutting assembly 5 can cut the wood at equal intervals; the side scale 505 arranged at the front end of the outer protrusion 503 can measure the position of the adjacent cutting assembly 5 after swinging, so that the cutting position can be compared and measured; the cutting assembly 5 is used for cutting wood, so that the bottom of the cutting assembly 5 is directly arranged with the pressing assembly 6 to press the wood, the bottom of the bottom frame plate 601 is arranged with the transmission belt 602, so that when the cutting assembly 5 slides forward, the pressing assembly 6 can press the wood through the transmission belt 602 without affecting the movement of the cutting assembly 5 and the pressing assembly 6; the sliding block 702 is arranged with the transmission wheel 703, the transmission wheel 703 is connected with the cutting assembly 5, the transmission wheel 703 on the opposite side is slidably arranged on the synchronous shaft 701, so that when one of the cutting assemblies 5 swings, the power can be transmitted from the transmission wheel 703 to the synchronous shaft 701, the other transmission wheels 703 on the synchronous shaft 701 move at the same time, the multiple cutting assemblies 5 can swing synchronously through the control assembly 7; the control block 705 is arranged in a clamping manner on the transmission wheel 703, so that the control block 705 can control the swing of the transmission wheel 703 and the cutting assembly 5; the position of the control block 705 corresponding to the position of the plate 704 is arranged in a hollow structure, so that when the control block 705 swings, the angle of the plate 704 can be observed through the hollow position.

Claims

1. A precision measuring device for lumber cutting, characterized by, Including bearing assembly (1), the rear side position of bearing assembly (1) is hinged and installed frame assembly (2), frame assembly (2) is slidably installed cutting assembly (5), the root position of frame assembly (2) is slidably installed connection assembly (3), connection assembly (3) and cutting assembly (5) are connected with each other, the top position of connection assembly (3) is provided with synchronous assembly (4), the front end surface of frame assembly (2) is installed control assembly (7), the front end position of cutting assembly (5) is connected with control assembly (7), the right side bottom of cutting assembly (5) is installed pressing assembly (6);The bearing plate (101) of bearing assembly (1) is rectangular plate structure, the bottom rear end position of bearing plate (101) is provided with the extension rod (103) of horizontal structure, the extension rod (103) is provided as the structure of four groups, the extension rod (103) is slidably installed with installation back plate (102), installation back plate (102) is long strip board structure, installation back plate (102) is provided with expansion sleeve at the connection of extension rod (103);The mounting bracket (201) of frame assembly (2) is provided as fixed in the top position of installation back plate (102), the upper end of mounting bracket (201) is provided with shaft body, the shaft body of mounting bracket (201) is hingedly installed with bearing frame (202), bearing frame (202) is rectangular frame structure, the front end position of bearing frame (202) is provided with sliding slot, the position of bearing frame (202) close to mounting bracket (201) is provided with sliding rail (203);The connecting block (301) of connection assembly (3) is provided as being installed on the shaft body of frame assembly (2), the front end position of connecting block (301) is rotatably installed with cutting assembly (5), the outer end position of connecting block (301) is installed with top pin block (303), the outer end of top pin block (303) is provided with blocking block (302), spring is additionally installed on top pin block (303), the part of cutting assembly (5) inside connection assembly (3) is provided with recess;The mounting plate (401) of synchronous assembly (4) is provided as being fixed on the top of each connection assembly (3), the left mounting plate (401) is rotatably installed with moving rod (402), moving rod (402) adopts telescopic structure, moving rod (402) is screw-connected with the rod body in it, the end position of moving rod (402) is fixed on the mounting plate (401) in the middle position;The mounting plate (401) connected at the end of moving rod (402) is rotatably installed with top wheel (404), the position of top wheel (404) is provided with pull belt (405), the top of pull belt (405) is in fixed state, the bottom of pull belt (405) is connected on sliding rod (403), sliding rod (403) is slidably installed on sliding rail (203), the end of sliding rod (403) is fixed with right mounting plate (401), sliding rod (403) and sliding rail (203) are additionally provided with tension spring.

2. A precision measuring device for lumber cutting as defined in claim 1, wherein: The cutting device (501) of the cutting assembly (5) is slidingly installed on the bearing rod (502), the front end of the cutting device (501) is rotatably installed on the frame assembly (2), the bearing rod (502) is provided with a protruding strip, the rear side of the cutting device (501) is rotatably installed on the connecting assembly (3), the front end of the cutting device (501) is provided with an outer protruding block (503), the inner part of the outer protruding block (503) is installed with a positioning block (504), and the outer protruding block (503) is hingedly installed with a side measuring scale (505).

3. The precision measuring device for lumber cutting of claim 1, wherein: The bottom frame plate (601) of the pressing assembly (6) is in a frame structure, the bottom frame plate (601) is slidingly installed at the bottom of the cutting assembly (5), the bottom frame plate (601) is provided with a roller shaft at the front end and the rear end of the bottom, and the roller shaft of the bottom frame plate (601) is installed with a transmission belt (602).

4. The precision measuring device for lumber cutting of claim 1, wherein: The synchronous shaft (701) of the control assembly (7) is provided in a long shaft structure, the synchronous shaft (701) is rotatably installed at the front end of the frame assembly (2), the synchronous shaft (701) is slidingly installed with a sliding block (702), the sliding block (702) is clamped at the front end of each cutting assembly (5), each sliding block (702) is installed with a transmission wheel (703), the transmission wheel (703) is slidingly installed on the synchronous shaft (701) along with the sliding block (702), the frame assembly (2) at the left side of the synchronous shaft (701) is provided with a contrast plate (704), the frame assembly (2) is clamped and installed with a control block (705) near the transmission wheel (703) of the contrast plate (704), and the control block (705) is provided in a hollow structure at the position corresponding to the contrast plate (704).

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